Cube jigger



FIG. 1 is a top plan view of the cube jigger showing my design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a perspective view thereof;

FIG. 4 is a front elevational view thereof, the rear elevational view being a mirror image thereof; and,

FIG. 5 is a right side elevational view thereof, the left side elevational view being a mirror image thereof. 

The ornamental design for a cube jigger, as shown and described. 